Display panel or portion thereof with a transitional graphical user interface



FIG. 1 is a front view of a display panel or portion thereof with atransitional graphical user interface showing a first image in asequence according to our new design;

FIG. 2 is a front view of a display panel or portion thereof with atransitional graphical user interface showing a second image in thesequence according to our new design;

FIG. 3 is a front view of a display panel or portion thereof with atransitional graphical user interface showing an alternative secondimage in the sequence according to our new design; and,

FIG. 4 is a front view of a display panel or portion thereof with atransitional graphical user interface showing another alternative secondimage in the sequence according to our new design.

The appearance of the transitional graphical user interface transitionssequentially between the FIGS. 1 and 2 in the first embodiment, FIGS. 1and 3 in the second embodiment, and FIGS. 1 and 4 in the thirdembodiment. The process or period in which one image transitions toanother forms no part of the claimed design, nor is the order of thedrawing figures restrictive of the particular sequence in which thegraphical user interface images appear on the display panel.

The broken lines included within the drawings, including the outermostbroken line showing a display panel or portion thereof and the otherbroken lines showing elements of the graphical user interface, form nopart of the claimed design.

CLAIM The ornamental design for a display panel or portion thereof witha transitional graphical user interface, as shown and described.